2.2.17 SMB2 FLUSH Request

The SMB2 FLUSH Request packet is sent by a client to request that a server flush all cached file information for a specified open of a file to the persistent store that backs the file. If the open refers to a named pipe, the operation will complete once all data written to the pipe has been consumed by a reader. This request is composed of an SMB2 header, as specified in section 2.2.1, followed by this request structure:


0


1


2


3


4


5


6


7


8


9

1
0


1


2


3


4


5


6


7


8


9

2
0


1


2


3


4


5


6


7


8


9

3
0


1

StructureSize

Reserved1

Reserved2

FileId

...

...

...

StructureSize (2 bytes): The client MUST set this field to 24, indicating the size of the request structure, not including the header.

Reserved1 (2 bytes): This field MUST NOT be used and MUST be reserved. The client MUST set this to 0, and the server MUST ignore it on receipt.

Reserved2 (4 bytes): This field MUST NOT be used and MUST be reserved. The client MUST set this to 0, and the server MUST ignore it on receipt.

FileId (16 bytes): An SMB2_FILEID, as specified in section 2.2.14.1.

The client MUST set this field to the identifier of the open to a file or named pipe that is being flushed.

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